The next giant quake: It’s coming and here’s how

Then-Gov. Gary Locke inspects a fissure in Deschutes Parkway in Olympia, caused by the 2001, magnitude 6.8 Nisqually earthquake. Strong shaking in a Cascadia megaquake will liquefy loose soils, undermining roadways and bridges. After a major quake, it could take one to three years to fully repair highways and bridges.